Investigation of the usage of palm oils with the aim of insulation in high voltage power system equipments

Autor: Nihat Pamuk
Rok vydání: 2015
Předmět:
Zdroj: Tehnički vjesnik
Volume 22
Issue 5
ISSN: 1848-6339
1330-3651
DOI: 10.17559/tv-20141106141239
Popis: U opremi energetskog sustava uobičajeno se koristi mineralno ulje za izolaciju i hlađenje. Preferirani legirni materijal mora imati dobre kemijske i električne karakteristike. Međutim, nedavni je slučaj ukazao na nedostatke tih fluida i loše karakteristike naročito kod točke paljenja i plamišta, i najvažnije, na slabi dijalektrički napon. Njihov najbitniji nedostatak je nepoštivanje zakona o zaštiti zdravlja i okoliša. Nadalje, oni nisu organski i stoga nisu biološki razgradivi. U ovom radu, prirodno palmino ulje i njegovi derivati proučavani su kako bi se pronašao izolirajući fluid bez loših posljedica za okoliš. Uzorci nerafiniranog i rafiniranog palminog ulja kemijski su i električki ispitani te uspoređeni s mineralnim uljem. Provedena su električna ispitivanja kao na pr. neodgovarajući napon, faktor snage i otpornost. Osim toga također su ispitivane kemijske karakteristike kao što su sadržaj vode, kinematički viskozitet, sadržaj vlage legure, plamište, gustoća, temperatura tečenja metala prilikom lijevanja, korozija, vrijednost neutralizacije i rastvaranje plinova. Rezultati laboratorijskih ispitivanja pokazali su da prirodno palmino ulje ima poželjnija kemijska i električna svojstva u usporedbi s postojećim mineralnim uljem za izolaciju opreme energetskog sustava.
Power system equipment have conventionally used mineral oil for insulation and cooling. The preferable alloy material has to be generated with good chemical and electrical features. However, recent case has indicated the shortcomings of these fluids where they have poor characteristics particularly at fire and flash point and most significantly poor dielectric malfunction voltage. The most critical of these deficiencies is the disability to meet up with the environmental and health laws. Further, they are not organic and hence not biodegradable. In this study, natural palm oil and its derivatives have been studied in attempt to discover an environmental friendly insulating fluid. Patterns such as crude and refined palm oils were chemically and electrically tested and comparisons were made with the mineral oil. Electrical tests such as the malfunction voltage, power factor and resistivity were pursued. Besides that, chemical characteristics such as water content, kinematic viscosity, moisture content of the alloy, flash point, density, pour point, corrosion, neutralization value and dissolution of gases were also being investigated. Results from the test laboratory studies have indicated that the natural palm oil has preferable chemical and electrical features as compared to the existing mineral oil for power system equipment insulation.
Databáze: OpenAIRE
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